JP4399705B2

JP4399705B2 - Impact force control type turning device

Info

Publication number: JP4399705B2
Application number: JP2003162381A
Authority: JP
Inventors: 知勇重盛
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-06
Filing date: 2003-06-06
Publication date: 2010-01-20
Anticipated expiration: 2023-06-06
Also published as: JP2004360370A

Description

【０００１】
【産業上の利用分野】
本発明は、削進機とポート切換装置からなり、両者の前進用ポート、後退用ポート、及び排気用ポート同士を夫々配管接続して備えた衝撃力コントロール式削進装置に係り、
削進機のエアーハンマーのハンマー(及び削進ビット)を、該ハンマーの前進衝突による打撃反発力の有、無に関係なく、即ち、該ハンマーの前進衝突による打撃反発力が小さく若しくは殆ど生じないような場合でも、本発明装置によって強制的にハンマー(及び削進ビット)を原位置に復帰させると共にハンマーの前進後退及びその速度、強弱を自在にコントロールして、削進対象地盤の硬質、軟質等に関係なく有効に削進できるようにした衝撃力コントロール式削進装置を提供するものである。
【０００２】
【従来の課題】
従来のエアーハンマーによる地盤の削進は圧力空気の圧力でハンマーを削進ビットに前進衝突し、該削進ビットを地盤に衝突してその衝撃力で地盤を破碎して削進する方式であり、地盤に衝突した打撃の反発力で削進ビット及びハンマーが原位置に復帰し、その復帰したハンマー及び削進ビットを再び圧搾エアーで急速前進衝突する作用を繰り返して削進するものである。
【０００３】
ところが、削進対象となる地盤が岩盤、玉石等の硬質地盤であれば、打撃の反発力が強いため削進ビット及びハンマーは復帰するが、互層地盤の砂礫、土等の軟質地盤であると、圧力空気で前進したハンマー及び削進ビットに衝突による打撃反発力が生じないため、ハンマー及び削進ビットが前進したまま動かなくなってしまって、削進ができなくなり、或は反発力が小さいためハンマーの打撃力が有効に作用できず、著しく削進効率がダウンしてしまうという大きな課題があった。
【０００４】
【発明による課題の解決】
そこで、本発明はエアーハンマーのハンマー及び削進ビットを、圧力空気による前進衝突による打撃反発力が生じない若しくは小さいような場合でも、即ち、反発力の有、無に関係なく、強制的に原位置に戻るように構成し、ハンマーの前進後退及びその強弱を自在にコントロールできるようにし、削進対象地盤の硬質、軟質等に関係なく有効に削進できるようにして、上記従来の課題を解決したものである。
【０００５】
【課題を解決する手段】
即ち、本発明は、削進機は、同軸線上に削進ビット、エアーハンマー、１本以上接続するロッド、回転手段、及び配管スイベルを接続設置すると共に回転手段でそれらを回転駆動するように備え、
【０００６】
前記エアーハンマーは、シリンダー内にピストン状のハンマーを、該ハンマーの後部空間を前進気室、前部空間を後退気室として設定寸法前後動自在に内装すると共に、該ハンマーの先端をガイド孔を通して削進ビットの後面に相対して備え、
【０００７】
前記ロッドの先端の接続部から後端の接続部に前進用ポート、後退用ポート、及び排気用ポートを貫設し、該ロッドの先端の接続部に接続したシリンダーの後端に前進用ポート、後退用ポート、及び排気用ポートをあけ、該前進用ポートの末端を前進気室に開口し、後退用ポートの末端を後退気室に開口し、排気用ポートをハンマーの中心を通してその前面中心に開口して備え、
【０００８】
前記回転手段は配管スイベルに接続する後端からロッドの後端の接続部に接続する先端に、前進用ポート、後退用ポート、及び排気用ポートを貫設すると共に、回転駆動用のギャー、モーターを備え、
前記配管スイベルはポート切換装置と配管接続する後端から回転手段の後端に接続する先端に前進用ポート、後退用ポート、及び排気用ポートを貫設して、
【０００９】
前記シリンダー４、ロッド６、回転手段７、及び配管スイベル８における、相互の前進用ポートＰ１、相互の後退用ポートＰ２、及び相互の排気用ポートＰ３を夫々接続連通して備え、
【００１０】
１本以上接続するロッド及びエアーハンマーの外周に、１本以上接続する埋設管を套嵌し、先頭の埋設管の先端を削進ビットに係合して備えたものであり、
【００１１】
上記削進機を架台に設置した油圧シリンダーで前進後退駆動するように備えたものであり、
【００１２】
ポート切換装置は、前進用ポート、後退用ポート、及び排気用ポートを設定位置に配設した装置本体に、中心軸線上に給気用ポートをあけると共に、周面の設定位置に前進用ポート、後退用ポート、及び排気用ポートを配設した円柱状のスプールを、設定寸法前後摺動及び速度調整自在に備えたものであり、
【００１３】
前記スプールの設定寸法前進摺動によって、装置本体の前進用ポートとスプールの前進用ポート及び給気用ポートを接続し、同時に、装置本体の後退用ポートとスプールの後退用ポートを遮断すると共に、装置本体の後退用ポートと排気用ポートを接続し、
【００１４】
また、スプール１８の設定寸法後退摺動によって、装置本体の後退用ポートとスプールの後退用ポート及び給気用ポートを接続し、同時に、装置本体の前進用ポートとスプールの前進用ポートを遮断すると共に、装置本体の前進用ポートとスプール及び装置本体の排気用ポートを接続するように備えたものであり、
【００１５】
前記削進機の配管スイベルとポート切換装置の装置本体の、相互の前進用ポート、相互の後退用ポート、及び相互の排気用ポートを夫々配管接続して備えたものである、衝撃力コントロール式削進装置によって課題を解決したものである。
【００１６】
【実施例】
次に本発明の実施例を説明する。図１、図２を参照。
削進機Ａは、同軸線上に削進ビット１、エアーハンマー３、１本以上接続するロッド6、回転手段７、及び配管スイベル８を接続設置すると共に回転手段７でそれらを回転駆動するように備え、
【００１７】
前記エアーハンマー３は、シリンダー４内にピストン状のハンマー５を、該ハンマー５の後部空間を前進気室９、前部空間を後退気室１０として設定寸法上下動自在に内装し、
該ハンマー５の先端をガイド孔１４を通して削進ビット１の後面に相対して備え、
【００１８】
前記ロッド６の先端の接続部から後端の接続部に前進用ポートＰ１、後退用ポートＰ２、及び排気用ポートＰ３を貫設し、
該ロッド６の先端の接続部に接続したシリンダー４の後端に前進用ポートＰ１、後退用ポートＰ２、及び排気用ポートＰ３をあけ、該前進用ポートＰ１の末端を前進気室９に開口し、後退用ポートＰ２の末端を後退気室１０に開口し、排気用ポートＰ３をハンマー５の中心を通してその前面中心に開口して備え、
【００１９】
前記回転手段７は配管スイベル８に接続する後端からロッド６の後端の接続部に接続する先端に、前進用ポートＰ１、後退用ポートＰ２、及び排気用ポートＰ３を貫設すると共に、回転駆動用のギャー、モーターを備え、
【００２０】
前記配管スイベル８は、ポート切換装置Ｂと配管接続する後端から回転手段７の後端に接続する先端に前進用ポートＰ１、後退用ポートＰ２、及び排気用ポートＰ３を貫設して、
【００２１】
前記シリンダー４、ロッド６、回転手段７、及び配管スイベル８における、相互の前進用ポートＰ１、相互の後退用ポートＰ２、及び相互の排気用ポートＰ３を夫々接続連通して備え、
【００２２】
１本以上接続するロッド６及びエアーハンマー３の外周に、１本以上接続する埋設管１１を套嵌し、先頭の埋設管１１の先端を削進ビット１に係合して該埋設管１１を牽引埋設するように備えたものであり、
【００２３】
上記削進機Ａを架台１２に設置した油圧シリンダー１３で前進後退駆動するように備えたものであり、
【００２４】
ポート切換装置Ｂは、前進用ポートＰ１、後退用ポートＰ２、及び排気用ポートＰ３を設定位置に配設した円筒状の装置本体１７に、中心軸線上に給気用ポートＰ４をあけると共に、周面の設定位置に前進用ポートＰ１、後退用ポートＰ２、及び排気用ポートＰ３を配設した円柱状のスプール１８を、設定寸法前後摺動及び速度調整自在に備えたものであり、
【００２５】
前記スプール１８の設定寸法前進摺動によって、装置本体１７の前進用ポートＰ１とスプール１８の前進用ポートＰ１及び給気用ポートＰ４を接続し、同時に、装置本体１７の後退用ポートＰ２とスプール１８の後退用ポートＰ２を遮断すると共に、装置本体１７の後退用ポートＰ２と排気用ポートＰ３を接続し、
【００２６】
また、スプール１８の設定寸法後退摺動によって、装置本体１７の後退用ポートＰ２とスプール１８の後退用ポートＰ２及び給気用ポートＰ４を接続し、同時に、装置本体１７の前進用ポートＰ１とスプール１８の前進用ポートＰ１を遮断すると共に、装置本体１７の前進用ポートＰ１とスプール１８及び装置本体１７の排気用ポートＰ３を接続するように備えたものであり、
【００２７】
前記削進機Ａの配管スイベル８とポート切換装置Ｂの装置本体１７の、相互の前進用ポートＰ１、相互の後退用ポートＰ２、及び相互の排気用ポートＰ３を夫々配管接続して、衝撃力コントロール式削進装置を構成したものである。
【００２８】
上記実施例装置において、削進ビット１の前面に拡縮回動自在に取付けた回動ビット２の拡回動状態における削進ビット１の回転手段７による回転及びハンマー５の前進動による衝突衝撃力によって、地盤２４に埋設管１１より大径の孔を削進し、回動ビット２の縮回動状態における油圧シリンダー１３による削進機Ａの後退引戻しによって、削進ビット１を埋設管１１内を通して回収できるように備える。
【００２９】
ポート切換装置Ｂのスプール１８の給気用ポートＰ４にアキュムレーター付エアーコンプレッサー１９等の圧力空気を配管供給し、該給気用ポートＰ４の空気圧を調整することによってエアーハンマー３のハンマー５の衝突衝撃力を強弱調整するように備える。
【００３０】
削進ビットＡによる設定距離削進に伴い、１本以上の設定長のロッド６及び１本以上の設定長の埋設管１１を順次接続するにつき、削進を一時停止し、最後位の埋設管１１の後端を削進機Ａから取外すと共に最後位のロッド６の後端の接続部２３を回転手段７から取外し、削進機Ａを油圧シリンダー１３で設定距離後退し、
次いで、新規のロッド６の先端の接続部２３を前記最後位のロッド６の後端の接続部２３に接続すると共に、該新規ロッド６に新規の埋設管１１を套嵌してその先端を前記最後位の埋設管１１の後端に接続し、
次いで、前記新規ロッド６の後端の接続部２３を回転手段７に取付けて相互の前進用ポート、相互の後退用ポート、及び相互の排気用ポートを連通接続すると共に、前記の新規埋設管１１の後端を削進機Ａに取付け、前記を繰返すことにより、１本以上のロッド６及び１本以上の埋設管１１を順次接続するように備える。
【００３１】
【作用】
まず、ポート切換装置Ｂのスプール１８を設定寸法前進摺動して、ポート切換装置Ｂの装置本体１７の前進用ポートＰ１とスプール１８の前進用ポートＰ１及び給気用ポートＰ４を接続し、エアーコンプレッサー１９の圧力空気を給気用ポートＰ４〜ポート切換装置Ｂの各前進用ポートＰ１〜配管Ｐ１〜削進機Ａの各前進用ポートＰ１〜エアーハンマー３のシリンダー４の前進気室９の順に給気してハンマー５を前進駆動し、削進ビット１の後面を打撃して削進ビット１を前進して削進する。
【００３２】
そのとき、後退気室１０の空気は、削進機Ａの各後退用ポートＰ２〜配管Ｐ２〜ポート切換装置Ｂの装置本体１７の後退用ポートＰ２〜スプール１８の排気用ポートＰ３〜装置本体１７の排気用ポートＰ３〜配管Ｐ３〜削進機Ａの各排気用ポートＰ３〜削進ビット１の先端〜地盤２４中の順に排気される。
【００３３】
反対に、ポート切換装置Ｂのスプール１８を設定寸法後退摺動して、ポート切換装置Ｂの装置本体１７の後退用ポートＰ２とスプール１８の後退用ポートＰ２及び給気用ポートＰ４を接続し、エアーコンプレッサー１９の圧力空気を給気用ポートＰ４〜ポート切換装置Ｂの各後退用ポートＰ２〜配管Ｐ２〜削進機Ａの各後退用ポートＰ２〜エアーハンマー３のシリンダー４の後退気室１０の順に給気してハンマー５を後退（復元）駆動し、削進ビット１の打撃を停止し削進を停止する。
【００３４】
そのとき、前進気室９の空気は、削進機Ａの各前進用ポートＰ1〜配管Ｐ１〜ポート切換装置Ｂの装置本体１７の前進用ポートＰ１〜スプール１８の排気用ポートＰ３〜装置本体１７の排気用ポートＰ３〜配管Ｐ３〜削進機Ａの各排気用ポートＰ３〜削進ビット１の先端〜地盤２４中の順に排気される。
【００３５】
上記のように、ポート切換装置Ｂから圧力空気を削進機Ａの前進気室９へ給気してハンマー３で削進ビット１を打撃して削進し、反対にポート切換装置Ｂから圧力空気を削進機Ａの後退気室１０へ給気してハンマー３を復元することを繰返し、その作用の繰り返しでエアーハンマー３のハンマー５が前進後退駆動して削進ビット１への衝突、復帰を繰り返し、回転手段７による削進ビット１の回転と相俟って地盤２４を削進する。
削進時は削進ビット１の回転ビット２が拡開して、埋設管１１より大径の孔を削進し、また、削進ビット１が埋設管１１を牽引して削進孔内に埋設する。
【００３６】
削進は、ポート切換装置Ｂのスプール１８の前後摺動速度を遅速調節して前進用ポートＰ１と後退用ポートＰ２の切換速度を遅速調節することによって、削進機Ａのエアーハンマー３の前進気室９と後退気室１０への送気切換えを調節して行い、また、ハンマー５の衝撃力はスプール１８の給気ポートＰ４へのエアーコンプレッサー１９による圧力空気の圧力を強弱調節して行う。
【００３７】
削進ビット１の回転速度は回転手段７の回転速度を例えば調速モーターによるギヤの回転速度を調節して行う。
【００３８】
削進ビット１の削進だけでも進行するが、同時に油圧シリンダー１３で削進機Ａを加圧前進して、削進及び管の埋設を行う。
【００３９】
削進目的地点に到達すると、削進を停止し、油圧シリンダー１３で削進機Ａ全体を引戻して、接続した埋設管１１及びロッド６を発進坑側で次々と取外して、削進ビット１を回収する。
【００４０】
埋設管１１を後の利用目的で地盤２４中に埋設したまま残す場合は、削進機Ａと最後位の埋設管１１の連結を外したのち、油圧シリンダー１３で削進機Ａを引戻すと、削進ビット１の回動ビット２が縮小回動して削進ビット１の外径を小さくし、先頭埋設管１１内に引戻し、同管１１内を通して発進坑側へ回収するものである。
【００４１】
【効果】
本発明は、削進機のエアーハンマーのハンマー及び削進ビットを、該ハンマーの前進衝突による打撃反発力の有、無に関係なく、即ち、該ハンマーの前進衝突による打撃反発力が小さく若しくは殆ど生じないような場合でも、強制的に原位置に復帰させると共に、ハンマーの前進後退及びその速度、強弱を自在にコントロール出来るようにしたので、従来のようにハンマー作動が停止するようなことなしに削進を有効に継続出来ると共に、削進対象地盤の硬質、軟質等に関係なく極めて効率的に削進できる優れた特徴がある。
【００４２】
ハンマーの衝撃作動を停止することなく継続できるため、削進孔の削進及び埋設管の牽引埋設をハンマーの衝撃力だけで行うことができ、それによって、削進機の先端の削進ビットの方向を変えるだけで自由な角度方向の削進が可能となり、例えば小さなスペースで人孔や枡等の削進を行うことも可能になる。
【００４３】
削進孔の削進と同時に牽引埋設した埋設管を必要に応じ地盤中に残して、削進機を引戻し回収出来るので、目的地盤中に残した埋設管を例えば人孔や宅地内の枡等として利用出来る利点がある。
【図面の簡単な説明】
【図１】本発明の実施例削進機の構成概略を示す縦断正面図。
【図２】本発明の実施例ポート切換装置の構成概略を示す縦断正面図。
【符号の説明】
Ａ削進機
Ｂポート切換装置
Ｐ１前進用ポート及び配管
Ｐ２後退用ポート及び配管
Ｐ３排気用ポート及び配管
Ｐ４給気用ポート及び配管
１削進ビット
２回動ビット
３エアーハンマー
４シリンダー
５ハンマー
６ロッド
７回転手段（ギヤー、モーター）
８配管スイベル
９前進気室
１０後退気室
１１埋設管
１２架台
１３油圧シリンダー
１４ガイド孔
１７装置本体
１８スプール
１９エアーコンプレッサー
２０調速モーター
２１円板
２２リンク
２３接続部（ロッド）
２４地盤[0001]
[Industrial application fields]
The present invention relates to an impact force control type grinding device comprising a grinding machine and a port switching device, each of which has a forward port, a backward port, and an exhaust port connected to each other by piping.
The hammer (and the cutting bit) of the air hammer of the grinder, regardless of the presence or absence of the impact repulsion force due to the forward impact of the hammer, that is, the impact repulsion force due to the forward impact of the hammer is small or hardly generated Even in such a case, the device according to the present invention forcibly returns the hammer (and the cutting bit) to the original position and freely controls the forward and backward movement of the hammer and its speed, strength and strength, so that the ground to be machined is hard and soft. It is an object of the present invention to provide an impact force control type cutting device capable of effectively cutting regardless of the above.
[0002]
[Previous issues]
The conventional ground cutting with an air hammer is a method in which the hammer moves forward against the cutting bit with the pressure of air, and the cutting bit hits the ground and breaks down the ground with the impact force. The cutting bit and the hammer are returned to their original positions by the repulsive force of the impact that collided with the ground, and the restored hammer and the cutting bit are again subjected to the rapid advancing collision action with the compressed air to perform the cutting.
[0003]
However, if the ground to be machined is a hard ground such as rock, cobblestone, etc., the repelling force of the impact is strong, so the cutting bit and hammer will return, but it is a soft ground such as gravel, soil etc. of the alternate layer ground The hammer and the cutting bit do not generate impact repelling force due to collision, so the hammer and the cutting bit cannot move while moving forward, or the repelling force is small. There was a big problem that the hammering force could not work effectively and the cutting efficiency was significantly reduced.
[0004]
[Solution of the Problem by the Invention]
Therefore, the present invention forces the hammer and the cutting bit of the air hammer to force the original even when the impact repulsive force due to the forward collision by the pressure air does not occur or is small, that is, regardless of the presence or absence of the repulsive force. It is configured to return to the position, the hammer can be controlled forward and backward and its strength freely, and it can effectively cut regardless of the hard, soft, etc. of the ground to be ground, solving the above conventional problems It is a thing.
[0005]
[Means for solving the problems]
That is, the present invention is KezuSusumu machine KezuSusumu bit coaxially, air hammer, rod connecting more than one, rotation means, and they as rotated by rotation means with a pipe swivel connection established Prepared,
[0006]
The air hammer is equipped with a piston-like hammer in a cylinder, with the rear space of the hammer as a forward air chamber and the front space as a backward air chamber so as to be movable back and forth, and the tip of the hammer passes through a guide hole. Prepare against the rear face of the cutting bit,
[0007]
A forward port, a backward port, and an exhaust port are provided through the connecting portion at the rear end from the connecting portion at the leading end of the rod, and the forward port is provided at the rear end of the cylinder connected to the connecting portion at the leading end of the rod, Open the retreat port and the exhaust port, open the end of the advance port to the advance air chamber, open the end of the retreat port to the retreat air chamber, and bring the exhaust port to the center of the front through the center of the hammer Open and prepare
[0008]
The rotating means has a forward port, a backward port, and an exhaust port penetrating from the rear end connected to the pipe swivel to the rear end connecting portion of the rod, and a rotation driving gear and motor. With
The piping swivel has a forward port, a backward port, and an exhaust port penetrating from the rear end connected to the port switching device to the rear end of the rotating means,
[0009]
The cylinder 4, the rod 6, the rotating means 7, and the piping swivel 8 are respectively provided with a mutual forward port P1, a mutual backward port P2, and a mutual exhaust port P3 connected in communication with each other.
[0010]
One or more connecting pipes are fitted around the outer periphery of one or more connecting rods and air hammers, and the leading end of the leading embedded pipe is engaged with a cutting bit.
[0011]
The above grinder is equipped to drive forward and backward with a hydraulic cylinder installed on the gantry,
[0012]
The port switching device has an air supply port on the center axis line in the device body in which the forward port, the backward port, and the exhaust port are arranged at the set position, and the forward port at the set position on the peripheral surface. A cylindrical spool provided with a retreat port and an exhaust port is equipped with a set size sliding back and forth and speed adjustment,
[0013]
The set dimension advance slide of the spool connects the advance port of the apparatus main body with the advance port of the spool and the air supply port, and simultaneously shuts off the reverse port of the apparatus main body and the reverse port of the spool, Connect the backward port and exhaust port of the main unit,
[0014]
Further, the set size of the spool 18 is reciprocated to connect the retreat port of the apparatus main body, the retreat port of the spool, and the air supply port, and at the same time, the advance port of the apparatus main body and the advance port of the spool are shut off. And a forward port of the apparatus body and a spool and an exhaust port of the apparatus body are connected to each other,
[0015]
An impact force control type comprising a piping swivel of the grinder and a device main body of the port switching device, each having a mutual forward port, a mutual backward port, and a mutual exhaust port connected by piping. The problem is solved by a cutting device.
[0016]
【Example】
Next, examples of the present invention will be described. See FIG. 1 and FIG.
In the cutting machine A, a cutting bit 1, an air hammer 3, one or more connecting rods 6, a rotating means 7, and a piping swivel 8 are connected and installed on a coaxial line, and the rotating means 7 drives them to rotate. Prepared,
[0017]
The air hammer 3 includes a piston-shaped hammer 5 in a cylinder 4, and a rear space of the hammer 5 is set as a forward air chamber 9 and a front space is set as a backward air chamber 10 so as to freely move up and down.
The tip of the hammer 5 is provided to face the rear surface of the cutting bit 1 through the guide hole 14;
[0018]
The forward port P1, the backward port P2, and the exhaust port P3 are provided through the connecting portion at the rear end from the connecting portion at the front end of the rod 6,
The forward port P1, the backward port P2, and the exhaust port P3 are opened at the rear end of the cylinder 4 connected to the connecting portion at the distal end of the rod 6. The distal end of the forward port P1 is opened to the forward air chamber 9. The end of the retreating port P2 is opened to the retreating air chamber 10, and the exhaust port P3 is opened to the center of the front surface through the center of the hammer 5,
[0019]
The rotating means 7 has a forward port P1, a backward port P2, and an exhaust port P3 penetrating from the rear end connected to the pipe swivel 8 to the front end connected to the rear end connecting portion of the rod 6, and rotated. It has a drive gear and motor,
[0020]
The piping swivel 8 has a forward port P1, a backward port P2, and an exhaust port P3 penetrating from the rear end connected to the port switching device B to the rear end of the rotating means 7,
[0021]
The cylinder 4, the rod 6, the rotating means 7, and the piping swivel 8 are respectively provided with a mutual forward port P1, a mutual backward port P2, and a mutual exhaust port P3 connected in communication with each other.
[0022]
One or more buried pipes 11 are fitted around the outer periphery of the rod 6 and the air hammer 3 to be connected to one or more, and the tip of the leading buried pipe 11 is engaged with the cutting bit 1 so that the buried pipe 11 is attached. It is prepared to be towed and buried,
[0023]
The grinder A is provided so as to be driven forward and backward by a hydraulic cylinder 13 installed on the gantry 12.
[0024]
In the port switching device B, an air supply port P4 is opened on a central axis line in a cylindrical device body 17 in which a forward port P1, a backward port P2, and an exhaust port P3 are arranged at set positions. A cylindrical spool 18 provided with a forward port P1, a backward port P2, and an exhaust port P3 at the set position of the surface is provided with a slide and set speed adjustable in the longitudinal direction.
[0025]
By the forward sliding of the set dimension of the spool 18, the forward port P1 of the apparatus body 17 is connected to the forward port P1 and the supply port P4 of the spool 18, and at the same time, the backward port P2 of the apparatus body 17 and the spool 18 are connected. The reverse port P2 is shut off, and the reverse port P2 and the exhaust port P3 of the apparatus body 17 are connected,
[0026]
In addition, by moving the set dimension of the spool 18 backward, the backward port P2 of the apparatus body 17 is connected to the backward port P2 and the supply port P4 of the spool 18, and at the same time, the forward port P1 of the apparatus body 17 and the spool are connected. 18 forward port P1 is cut off, and forward port P1 of device body 17 is connected to spool 18 and exhaust port P3 of device body 17,
[0027]
The piping swivel 8 of the grinder A and the device main body 17 of the port switching device B are connected to each other by a piping connection between the mutual forward port P1, the mutual backward port P2, and the mutual exhaust port P3. A control type cutting device is constructed.
[0028]
In the above-described embodiment apparatus, the collision impact force due to the rotation of the cutting bit 1 by the rotating means 7 and the forward movement of the hammer 5 in the expanded rotation state of the rotating bit 2 attached to the front surface of the cutting bit 1 so as to freely expand and contract. Accordingly, a hole having a diameter larger than that of the buried pipe 11 is cut in the ground 24, and the cutting bit 1 is moved into the buried pipe 11 by the retracting and retracting of the cutting machine A by the hydraulic cylinder 13 in the contracted and rotated state of the rotating bit 2. Prepare to be able to collect through.
[0029]
The pressure air of the air compressor 19 with an accumulator is supplied to the air supply port P4 of the spool 18 of the port switching device B by piping, and the air pressure of the air supply port P4 is adjusted, so that the hammer 5 of the air hammer 3 collides. Prepare to adjust the impact strength.
[0030]
In accordance with the set distance cutting by the cutting bit A, one or more set length rods 6 and one or more set length buried pipes 11 are sequentially connected, and the cutting is temporarily stopped and the last buried pipe is connected. 11 is removed from the grinder A, and the connecting portion 23 at the rear end of the rearmost rod 6 is detached from the rotating means 7, and the grinder A is moved backward by a set distance by the hydraulic cylinder 13.
Next, the connecting portion 23 at the tip of the new rod 6 is connected to the connecting portion 23 at the rear end of the rearmost rod 6, and a new buried pipe 11 is fitted into the new rod 6 so that the tip is inserted into the connecting portion 23. Connected to the rear end of the buried pipe 11 at the rearmost position,
Next, the connecting portion 23 at the rear end of the new rod 6 is attached to the rotating means 7 to connect the advance port, the retreat port, and the exhaust port to each other, and the new embedded pipe 11. The rear end is attached to the grinder A, and one or more rods 6 and one or more buried pipes 11 are sequentially connected by repeating the above.
[0031]
[Action]
First, the spool 18 of the port switching device B is slid forward by a set dimension, and the forward port P1 of the device body 17 of the port switching device B is connected to the forward port P1 and the air supply port P4 of the spool 18, and the air Compressed air from the compressor 19 is supplied in the order of the supply port P4 to the port P1 to the port switching device B, the piping P1 to the forward port P1 to the cutting machine A, and the forward chamber 9 to the cylinder 4 of the air hammer 3. Air is supplied and the hammer 5 is driven forward, the rear surface of the cutting bit 1 is hit, and the cutting bit 1 is advanced and cut.
[0032]
At that time, the air in the retreating air chamber 10 flows from the retreating ports P2 of the grinder A to the piping P2 to the retreating port P2 of the device main body 17 of the port switching device B to the exhaust port P3 of the spool 18 to the device main body 17. The exhaust ports P3 to P3 are exhausted in the order from the exhaust ports P3 of the machine A to the tip of the cutting bit 1 to the ground 24.
[0033]
On the contrary, the spool 18 of the port switching device B is slid backward by the set dimension, and the backward port P2 of the device body 17 of the port switching device B is connected to the backward port P2 and the supply port P4 of the spool 18. The pressure air of the air compressor 19 is supplied to the retreating air chamber 10 of the cylinder 4 of the air hammer 3 from the supply port P4 to each retreating port P2 to the pipe switching device B2 to the piping P2 to each retreating port P2 to the grinder A. In order, air is supplied in order to drive the hammer 5 backward (restore), stop the cutting bit 1 from hitting, and stop the cutting.
[0034]
At that time, the air in the advance air chamber 9 flows from the respective advance ports P1 to the pipes P1 to the machine main body 17 of the port switching device B to the exhaust port P3 to the exhaust port P3 to the device main body 17 of the spooling machine A. The exhaust ports P3 to P3 are exhausted in the order from the exhaust ports P3 of the machine A to the tip of the cutting bit 1 to the ground 24.
[0035]
As described above, pressurized air is supplied from the port switching device B to the forward air chamber 9 of the grinding machine A, and the grinding bit 1 is struck by the hammer 3 to move forward. The air is repeatedly supplied to the backward air chamber 10 of the grinder A to restore the hammer 3, and the hammer 5 of the air hammer 3 is driven forward and backward by the repetition of the action to collide with the cutting bit 1. The return is repeated, and the ground 24 is cut in combination with the rotation of the cutting bit 1 by the rotating means 7.
At the time of cutting, the rotating bit 2 of the cutting bit 1 expands to cut a hole having a larger diameter than the buried pipe 11, and the cutting bit 1 pulls the buried pipe 11 to enter the cutting hole. Buried.
[0036]
Cutting is performed by adjusting the forward / backward sliding speed of the spool 18 of the port switching device B and adjusting the switching speed between the forward port P1 and the backward port P2 to make the forward movement of the air hammer 3 of the cutting machine A. The air supply switching to the air chamber 9 and the retreat air chamber 10 is adjusted, and the impact force of the hammer 5 is adjusted by adjusting the pressure of the pressure air by the air compressor 19 to the air supply port P4 of the spool 18. .
[0037]
The rotational speed of the cutting bit 1 is determined by adjusting the rotational speed of the rotating means 7, for example, by adjusting the rotational speed of the gear by a speed governing motor.
[0038]
Although the cutting bit 1 advances only, the cutting machine A is pressurized and advanced by the hydraulic cylinder 13 at the same time to cut and embed the pipe.
[0039]
When the cutting target point is reached, the cutting is stopped, the entire cutting machine A is pulled back by the hydraulic cylinder 13, the connected buried pipe 11 and the rod 6 are removed one after another on the start shaft side, and the cutting bit 1 is set. to recover.
[0040]
When leaving the buried pipe 11 buried in the ground 24 for the purpose of later use, after disconnecting the machine A and the last buried pipe 11, the hydraulic cylinder 13 is used to pull back the machine A. The turning bit 2 of the cutting bit 1 is reduced and turned to reduce the outer diameter of the cutting bit 1, pulled back into the head buried pipe 11, and collected through the pipe 11 to the start pit side.
[0041]
【effect】
The present invention relates to a hammer and a cutting bit of an air hammer of a grinder regardless of whether or not the hammer has a repulsive force due to the forward collision of the hammer, that is, the impact repulsive force due to the forward collision of the hammer is small or almost Even if it does not occur, it is forcibly returned to its original position, and the hammer's forward / backward movement and its speed and strength can be freely controlled, so that the hammer operation does not stop as in the past. There is an excellent feature that the cutting can be effectively continued and the cutting can be carried out very efficiently regardless of the hardness, softness, etc. of the ground to be cut.
[0042]
Since the hammer impact operation can be continued without stopping, the drilling hole can be drilled and the buried pipe can be pulled and buried only by the impact force of the hammer. By changing the direction, it is possible to cut in a free angle direction. For example, it is possible to cut a human hole or a ridge in a small space.
[0043]
As necessary, the buried pipe pulled and buried at the same time as the drilling hole can be left in the ground, and the grinding machine can be pulled back and collected. There is an advantage that can be used as.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view showing a schematic configuration of an embodiment of a cutting machine according to the present invention.
FIG. 2 is a longitudinal front view showing a schematic configuration of a port switching apparatus according to an embodiment of the present invention.
[Explanation of symbols]
A Cutting machine B Port switching device P1 Forward port and piping P2 Reverse port and piping P3 Exhaust port and piping P4 Air supply port and piping 1 Cutting bit 2 Rotating bit 3 Air hammer 4 Cylinder 5 Hammer 6 Rod 7 Rotating means (gear, motor)
8 Piping swivel 9 Forward air chamber 10 Backward air chamber 11 Buried pipe 12 Base 13 Hydraulic cylinder 14 Guide hole 17 Device body 18 Spool 19 Air compressor 20 Speed control motor 21 Disc 22 Link 23 Connection (rod)
24 ground

Claims

The cutting machine is equipped with a cutting bit, an air hammer, one or more connecting rods, a rotating means, and a piping swivel connected on the coaxial line and rotating them with the rotating means.
The air hammer is equipped with a piston-like hammer in a cylinder, the rear space of the hammer is a forward air chamber, the front space is a backward air chamber, and the front dimension is movable back and forth, and the tip of the hammer passes through a guide hole. Prepare against the rear face of the cutting bit,
A forward port, a backward port, and an exhaust port are provided through the connecting portion at the rear end from the connecting portion at the leading end of the rod, and the forward port is provided at the rear end of the cylinder connected to the connecting portion at the leading end of the rod, Open the retreat port and the exhaust port, open the end of the advance port into the advance air chamber, open the end of the retreat port into the retreat air chamber, and connect the exhaust port through the center of the hammer. Open in the center of the front,
The rotating means has a forward port, a backward port, and an exhaust port penetrating from the rear end connected to the pipe swivel to the rear end connecting portion of the rod, and a rotation driving gear and motor. With
The piping swivel is provided with a forward port, a backward port, and an exhaust port penetrating from the rear end connected to the port switching device to the rear end of the rotating means,
The cylinder, the rod, the rotating means, and the piping swivel, each having a mutual forward port, a mutual backward port, and a mutual exhaust port connected in communication with each other,
One or more connecting pipes are fitted around the outer periphery of one or more connecting rods and air hammers, and the tip of the leading embedded pipe is engaged with a cutting bit.
The above grinder is equipped to drive forward and backward with a hydraulic cylinder installed on the gantry,
The port switching device has an air supply port on the central axis line in the device body in which the forward port, the backward port, and the exhaust port are arranged at the set position, and the forward port at the peripheral surface set position, A cylindrical spool provided with a retreat port and an exhaust port is provided so that it can slide back and forth and adjust the speed freely.
By connecting the advance port of the apparatus main body to the advance port of the spool and the air supply port by the set dimension forward sliding of the spool, and simultaneously shutting off the reverse port of the apparatus main body and the reverse port of the spool, Connect the backward port and exhaust port of the main unit,
Further, by setting the dimensions backward sliding of the spool, connects the retraction port and the air supply port retracted port and the spool of the apparatus body, at the same time, blocking the forward port of the forward ports and the spool of the main body And a forward port of the apparatus body and a spool and an exhaust port of the apparatus body are connected to each other,
A pipe swivel of the grinder and an apparatus main body of the port switching device, each having a forward port, a mutual backward port, and a mutual exhaust port connected to each other by piping.
Impact force control type turning device.

A cutting bit is connected to the tip of the cylinder of the air hammer so that the set bit can move up and down, and the tip of the leading buried pipe is engaged with the outer periphery of the cutting bit, and the buried pipe is moved by the cutting of the cutting bit. Prepare to burial tow,
Larger than the buried pipe in the ground due to the rotation force of the turning bit in the expanded rotation state of the rotating bit attached to the front surface of the cutting bit and the impact force due to the forward and backward movement of the hammer of the air hammer. It is characterized in that the drilling bit can be recovered through the buried pipe by drilling the hole of the diameter, and by retracting and retracting the grinder with the hydraulic cylinder in the contracted pivot state of the pivot bit.
The impact force control type turning device according to claim 1.

As the set distance is reduced by the cutting bit, the cutting is temporarily stopped and the rear end of the last buried pipe is connected to one or more set length rods and one or more set length buried pipes in sequence. Is removed from the grinder and the connecting part at the rear end of the last rod is removed from the rotating means, and the grinder is retracted by a set distance with a hydraulic cylinder,
Next, the connecting portion at the tip of the new rod is connected to the connecting portion at the rear end of the last rod, and a new buried tube is fitted onto the new rod, and the tip is connected to the last buried tube. Connect to the rear end,
Next, the connecting portion of the rear end of the new rod is attached to the rotating means to connect the forward port, the backward port and the exhaust port to each other, and the rear end of the new buried pipe is connected. Attaching to the grinder, repeating the above, it is provided to sequentially connect one or more rods and one or more buried pipes,
The impact force control type turning device according to claim 1.

The port switching device has a cylindrical peripheral surface in which a port for air supply is opened on a central axis line in a cylindrical device body in which a forward port, a backward port, and an exhaust port are arranged at set positions. And a spool provided with a forward port, a backward port, and an exhaust port provided at positions corresponding to the forward port, the backward port, and the exhaust port of the apparatus main body. Is,
The other end of the spool is connected to the other end of a link that is flattened by a disc that is rotated by a speed-control motor and connected to one end, and the spool is slid forward and backward to set dimensions so that the speed can be adjusted. Switching between connecting and disconnecting the mutual forward port, mutual backward port, and mutual exhaust port and adjusting the switching speed thereof, thereby adjusting the speed of forward and backward movement of the hammer,
In addition, by connecting the pressure air supply means of the air compressor with an accumulator to the air supply port of the spool, and adjusting the air pressure of the air supply port, the impact force of the hammer of the air hammer can be adjusted. In preparation for,
The impact force control type turning device according to claim 1.